Hardware settings panel disappearing

Well I’ve been using C8 ‘aggressively’ (96/44k files mixes-conversions), all day; even burning a DVD and changing a graphics project, whilst having a C8 project open. Tried opening C8 without MR on and turned it on during loading, not recommended, but nothing, so far, has stopped Hardware Control from being available. A small niggle, in comparison to more universal bugs, but a relief to my workflow.